Waterbirds in Percut Sei Tuan, North Sumatera had been studied in September 2010 until March 2011.This site which is one of the important birds area in SumateraIsland. The aims of studies to analysiswaterbirds diversity, macrozoobenthos diversity and habitat suitability of waterbirds. A total of 190375 individu and 50 waterbird species belonging to 11 families of 5 orders was recorded. Tanjung Rejo the highest (164.343) dan Pantai Labu the lowest (6.212) waterbird individu. The highest diversity (H=2.84) was found in Pematang Lalang and lowest (H=1.69) in Tanjung Rejo. The value of evennesswas higher (0.80) in Bagan Percut and Pematang Lalng and lowest (0.48) in Tanjung Rejo. Shorebird was dominan in three location and wading bird dominan in Tanjung Rejo A total of 31.722macrozoobenthos individu and 26 species belonging to 20 families of 5 class was recorded. Silt loam2 (SL2) the highest (71.45) dan clay loam2 (CL2) the lowest (380) macrozoobenthos individu. The highest diversity (H=2.26) was found in Silt loam4 (SL4) and lowest (H=0.71) in Silt Loam2 (SL2). The value of evennesswas higher (0.86) in Silt Loam (SL4) and Clay Loam and lowest (0.40) in Silt Loam2 (SL2). Three class suitability habitat for waterbirds were classifiedhigh suitable, suitable, unsuitable. Pematang Lalang and Pantai Labuarebest suitability habitat for wading bird and shorebird. Tanjung Rejo did not used to feeding ground for waterbirds. Shorebird have suitable habitat larger than wading bird.